Torque units, wrench adapter settings and source-linked specifications.
Keep the specified torque, its units and its source together.
Bolt Torque Pocket is an offline torque converter, wrench-adapter calculator and personal specification table. Enter a target from your manufacturer or engineering procedure, save the reference and prepare a real handoff file.
• Convert N·m, ft·lbf and in·lbf with explicit units. Copy the calculated conversions.
• Calculate an in-plane crowfoot or offset-adapter wrench setting from the target, grip-to-drive length, offset and angle (0–180°). Inspect the geometry and setting together.
• Save named specifications with fastener/location, grade label, thread condition, source, notes and optional adapter geometry.
• Add the increasing pass percentages required by your procedure, ending at 100%. The app calculates those target values.
• Edit, reuse and delete saved specifications. Restore an exported Android JSON backup after reviewing the replacement count.
• Save a real handoff ZIP containing a PDF, CSV, plain text, source-bearing JSON backup and SHA-256 manifest. Save CSV/JSON separately or share the ZIP through Android.
You supply the specification
The app includes no automatic bolt-grade torque chart or manufacturer database. Grade and condition are descriptive labels; they do not change a target. Check the actual procedure, thread preparation and calibrated tool range. Calculations do not certify suitability, engineering compliance or completed tightening. Passes are user-defined targets, not measured results or reminders.
Adapter scope
Setting = target × L / (L + E × cos(angle)). L is measured from the grip centre to the square-drive centre; E is the drive-to-fastener offset in the same length unit. Force is assumed perpendicular to the wrench at the measured grip, with a rigid in-plane adapter. A nonpositive effective arm or out-of-range input is blocked. This is an offset calculation, not torque-angle tightening.
Local files
Up to 300 saved specifications and a 2 MiB library/backup. Saved torque targets are limited to 1,000,000 N·m; geometry inputs are limited to 10,000 in the selected mm/in unit. CSV prefixes formula-like text with an apostrophe. Detailed handoff reports are English. Controls support English and Korean.
No account, ads, analytics, subscription or in-app purchases. No microphone, network or broad storage permission. Android backup is disabled. You choose individual files and save destinations; your selected document provider or sharing app may use its own network services. An unreadable library is protected from edits and can be exported as its original bytes.
Android and iPhone/iPad editions are separate purchases.
Neuigkeiten
Initial Android edition with torque conversion, adapter geometry, saved specifications and real PDF/CSV/JSON handoff files.